part of part of has muscle origin has muscle origin has muscle insertion has muscle insertion Homo sapiens sternum rectus abdominis muscle https://upload.wikimedia.org/wikipedia/commons/9/95/Rectus_abdominis.png GAID:142 VHOG:0000863 NCIT:C33449 UBERON:0002382 EMAPA:18164 m. rectus abdominis XAO:0004128 EHDAA:8252 MESH:D017568 While the 'sixpack' is by far the most common configuration of the muscle bellies of the rectus, there exist rare anatomic variations which result in the appearance of eight ('eightpack'), ten, or-even rarer-asymmetrically arranged segments. All these variations are functionally equivalent AAO:0010789 MA:0002364 The rectus abdominis muscle is a paired muscle running vertically on each side of the anterior wall of the abdomen. There are two parallel sets of muscles, separated by a midline band of connective tissue called the linea alba (white line). It extends from the pubic symphysis/pubic crest inferiorly to the xiphisternum/xiphoid process and lower costal cartilages (5-7) superiorly. It is contained in the Rectus sheath. The rectus is usually crossed by three fibrous bands licked by the tendinous inscriptions. [WP,modified]. FMA:9628 Wikipedia:Rectus_abdominis_muscle SCTID:256672008 UMLS:C0206066 EHDAA2:0001595 musculus rectus abdominis rectus abdominis anterior abdominal wall muscle anterior abdominal wall pelvic girdle skeleton hypaxial musculature